Proximity switches, as the name suggests, are changes when approaching an object. This type of switch is generally used in mechanical motion, when two objects are approaching, the trigger switch gives a signal, and the control unit (PLC) detects this signal and adopts the next action.
The primary universal proximity switch is also a conductor, which uses the conductor to produce eddy currents inside when approaching an object that can generate electromagnetic fields, and this eddy current reacts to the proximity switch to identify whether there is a conductor approaching. It also plays a role in controlling the current and protecting the safety.
As long as we carefully understand its classification and instructions before use, and then accurately distinguish the positive and negative poles of the power supply, and connect the device correctly, it can be used correctly and safely.
We should know that general-purpose proximity switches are also divided into many types such as electrical proximity switches and photoelectric proximity switches. The most common in life is the electrical proximity switch. According to the color of the line, brown or red should be connected to the positive pole of the power supply, and blue to the negative pole of the power supply, so as to use it correctly and safely.
In this way, how we should safely use the universal proximity switch is only a small problem.
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